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【OG20-P151-34题】
Cheryl purchased 5 identical hollow pine doors and 6 identical solid oak doors for the house she is building. The regular price of each solid oak door was twice the regular price of each hollow pine door.However, Cheryl was given a discount of 25% off the regular price of each solid oak door. If the regular price of each hollow pine door was $40, what was the total price of all 11 doors?
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30、【答案】C
【解析】Hollow pine door 的价格是$40，则solid oak door的价格是
40×2×(1-25%)=80×0.75=60。
所以总价钱为40×5+60×6=560。
【知识点补充】
a discount of 25% off：有25%的折扣（打7.5折）
欢乐多
谢丽尔为她正在建造的房子买了5扇一模一样的空心松木门和6扇一模一样的实心橡木门。实心橡木门的常规价格是空心松木门的常规价格的两倍。然而，谢丽尔得到了每扇实心橡木门正常价格的25%的折扣。如果每扇空心松木门的常规价格是40美元，那么所有11扇门的总价是多少?
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2022-09-24 10:48:57
小蚂蚁的窝
感觉答案是510啊 total=75%*（5*40+6*80）
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2020-01-11 17:10:20
emily666回复小蚂蚁的窝
hp=5*40 so=6*80*3/4 total=560 打折的只有so一种
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2020-03-10 14:25:50
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